Pinwheel



CLF. MITCHEL.

PINWHEEL.

APPLICATION FILED SEPT. 24, l9l9. 1,352,674, PatentedSept. 14, 1920.

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A TTORNEYS.

UNITED STATES PATENT OFFICE;

CHARLES Ii. MITCHEL, OF ROCHESTER, NEW YORK, ASSIGNOIt TO BASTIAN BROS.COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION.

V PINWHEEL.

Specification of Letters Patent.

Patented Sept. 14, 1920.

Applicationfiled September 24, 1919. Serial No. 326,022.

To all whom it may concern:

'Be it known that 1, CHARLES F. MITGHEL, a citizen of the United States,and'resident of Rochester, in the county of Monroe and State of NewYork, have invented certain.

Z.- completed pin wheel and the blanks being secured together in asimple and inexpensive manner which maintains the relative positions ofthe two blanks in the completed wheel.

To this and other ends, the invention consists of certain parts andcombinations of parts, all of which will be hereinafter de scribed, theno vel features being pointed out in the appended claims.

In the drawings:

Figure 1 is a plan view of the uppermost blank;

Fig. 2 is a plan view of the under blank;

Fig. 3 is a face view of the completed pin wheel;

Fig. l is a rear view of the completed pin wheel;

Fig. 5 is an enlarged fragmentary view showing the connection betweenthe two blanks from the outer face of the uppermost blank; and

Fig. 6 is an enlarged section on the line 6-6, Fig.

Referring more particularly to the drawings 1 indicates a rectangularblank forming the uppermost blank of the pin wheel. This blank hasradially arranged slits 2 intersecting the corners of the blank. 3indicates the under blank which is formed with slits 4: intersecting thecorners of the blank and arranged substantially tangential to a circleconcentric with the axis 5 of the blank 3. The axis 6 of the blank 1 isarranged in line with the axis 3 of the blank 2 and the blade formingportions 7 and 8 of the blanks turnmg 1 and 3 are then rolled andsecured together at a common point which is in line with the axes 5 and6 of the blanks 1 and 3. This rolling is effected in such a manner thatthe blade forming portions of one blank alternate with the blade formingportions of the other blank and the edges of the blanks abutat 10 so asto prevent relative turning in one direction. In order to preventturning in the opposite direction the under blank 3 is provided with aslot or opening 11 while the upper or outer blank 1 is provided with atongue 12. This tongue 12 is passed through the opening 11 and preventsthe relative turning of the blanks in the opposite direction. A pin orother fastening device is introduced through the openings in the ends ofthe blades and through the openings at the centers of the blanks andserves as a bearing on which the pin wheel turns. An eyelet 18 mayconnect the centers while an eyelet 14 may connect the ends of theblades of the two blanks. The blanks may be made of paper, celluloid, orlike material in sheet form.

A pin wheel made in accordance with this invention provides-aconstruction made of two blanks each having blade forming portions, theblade forming portions of one blank being arranged alternately with theblade forming portions of'the other blank and the blanks being securedtogether in a simple and inexpensive manner so that relative movementbetween the blanks is prevented in both directions. I

Vhat I claim as my invention and desire to secure by Letters Patent is:

A pin wheel formed of two differently slitted blanks each having bladeforming portions rolled to provide blades, the blades of one blankalternating with the blades of the other blank and cooperating with eachother to prevent relative turning of the blanks in one direction, one ofsaid blanks having an opening and the other having a tongue extending ofthe blanks in the opposite direction.

CHARLES F. Mrrcnm...

into said opening to prevent the

